LOANS AND ALLOWANCE FOR LOAN LOSSES - Activity in Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Activity in allowance for loan losses
Balance, beginning of period	$ 12,668	$ 13,347	$ 12,775	$ 13,568
Provision for loan losses	100	0	100	0
Charge-offs	(78)	(154)	(207)	(483)
Recoveries	61	247	83	355
Balance, end of period	12,751	13,440	12,751	13,440
Unallocated
Activity in allowance for loan losses
Balance, beginning of period	512	664	414	774
Provision for loan losses	(42)	(39)	56	(149)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	470	625	470	625
Commercial
Activity in allowance for loan losses
Balance, beginning of period	8,800	9,827	9,238	9,803
Provision for loan losses	(69)	(53)	(411)	(90)
Charge-offs	0	(26)	(100)	(47)
Recoveries	33	181	37	263
Balance, end of period	8,764	9,929	8,764	9,929
Commercial \| Commercial Real Estate
Activity in allowance for loan losses
Balance, beginning of period	6,963	7,996	7,530	7,883
Provision for loan losses	(214)	(12)	(738)	21
Charge-offs	0	(26)	(45)	(26)
Recoveries	28	175	30	255
Balance, end of period	6,777	8,133	6,777	8,133
Commercial \| Acquisition and Development
Activity in allowance for loan losses
Balance, beginning of period	513	739	580	850
Provision for loan losses	65	(152)	(3)	(263)
Charge-offs	0	0	0	0
Recoveries	1	0	2	0
Balance, end of period	579	587	579	587
Commercial \| Commercial and Industrial
Activity in allowance for loan losses
Balance, beginning of period	1,218	1,030	1,074	1,012
Provision for loan losses	69	112	267	149
Charge-offs	0	0	(55)	(21)
Recoveries	4	6	5	8
Balance, end of period	1,291	1,148	1,291	1,148
Commercial \| Municipal
Activity in allowance for loan losses
Balance, beginning of period	106	62	54	58
Provision for loan losses	11	(1)	63	3
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	117	61	117	61
Consumer
Activity in allowance for loan losses
Balance, beginning of period	3,356	2,856	3,123	2,991
Provision for loan losses	211	92	455	239
Charge-offs	(78)	(128)	(107)	(436)
Recoveries	28	66	46	92
Balance, end of period	3,517	2,886	3,517	2,886
Consumer \| Residential Mortgage
Activity in allowance for loan losses
Balance, beginning of period	3,229	2,677	2,979	2,870
Provision for loan losses	198	66	441	111
Charge-offs	(51)	(80)	(51)	(324)
Recoveries	10	43	17	49
Balance, end of period	3,386	2,706	3,386	2,706
Consumer \| Installment and Other
Activity in allowance for loan losses
Balance, beginning of period	127	179	144	121
Provision for loan losses	13	26	14	128
Charge-offs	(27)	(48)	(56)	(112)
Recoveries	18	23	29	43
Balance, end of period	$ 131	$ 180	$ 131	$ 180

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

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-Publisher FASB
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- Definition

Amount of expense related to estimated loss from loan and lease transactions.

+ References

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-Name Accounting Standards Codification
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